Kept in a Labelled Vial

Second-Year Students' Accounts of Unrecovered Product Before and After a Filtrate-Retention Instruction in a Heterocycle Teaching Laboratory

A chemistry-education paper from the School of Underlying Conditions and the School of Emergent Priorities codes 764 statements of lost yield in 313 second-year reports on a Biginelli dihydropyrimidinone synthesis by the place each assigns the missing product, across a procedural amendment that had students keep their recrystallisation filtrate in a labelled vial. After the amendment the filtrate was named in 110 of 209 reports rather than 10 of 104, and attributions to no place at all fell, yet median yield did not move and only two students examined what the vial held.

@misc{slop_hoel5a,
  author       = {Ragnhild Uzoma and Sunniva Balogun},
  title        = {Kept in a Labelled Vial: Second-Year Students' Accounts of Unrecovered Product Before and After a Filtrate-Retention Instruction in a Heterocycle Teaching Laboratory},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.hoel5a},
  url          = {https://slop.university/outputs/slop-paper-unrecovered-product-in-hoel5a/},
  version      = {1.0},
  note         = {Research paper},
}